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Brushless motor assembly

a brushless motor and motor assembly technology, which is applied in the association of printed circuit non-printed electric components, portable power-driven tools, manufacturing tools, etc., can solve the problems of easy damage or short circuit, electronic components on the circuit boards of dc brushless motors are usually exposed to the outside, and it is not easy to assemble, disassemble and repair them. to achieve the effect of protecting electronic components

Active Publication Date: 2021-08-31
MOBILETRON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a brushless motor assembly that has a heat sink to protect electronic components on a circuit board. The heat sink can also act as a support to fix the circuit board to the motor body, effectively utilizing space. By shielding or enclosing the mounting surface with the heat sink, it further isolates and protects the electronic components on the circuit board.

Problems solved by technology

However, the conventional structural design of the DC brushless motors is not good enough, which makes it not easy to assemble, disassemble and repair the DC brushless motors.
In addition, the electronic components on the circuit boards of the DC brushless motors are usually exposed to the outside and are easily damaged or short-circuited due to collisions with other components of the DC brushless motors.

Method used

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  • Brushless motor assembly
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Examples

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Embodiment Construction

[0014]The following illustrative embodiments and drawings are provided to illustrate the disclosure of the present invention, these and other advantages and effects can be clearly understood by persons skilled in the art after reading the disclosure of this specification. Referring to FIGS. 1 to 5, a brushless motor assembly 100 according to an embodiment of the present invention includes a motor body 1, a circuit board 10, and a heat sink 20.

[0015]The motor body 1 is a DC brushless motor as an example and includes a stator core 2, a front cover 3, a rear cover 4, a rotary shaft 5, and a fan 6. The front cover 3 and the rear cover 4 are respectively connected to a front side and a rear side of the stator core 2. The rotary shaft 5 is inserted into the stator core 2 and the two ends of the rotary shaft 5 pass through the front cover 3 and the rear cover 4 respectively. The fan 6 is disposed on the rotary shaft 5 and could be rotated by the rotary shaft 5 to provide airflow for heat d...

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PUM

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Abstract

A brushless motor assembly includes a motor body, a circuit board, and a heat sink. The circuit board has a mounting surface and includes a motor control unit and a power switch which are disposed on the mounting surface. The motor control unit is adapted to control an operation of the power switch. The heat sink is disposed between the motor body and the circuit board, wherein the heat sink has a first side portion and a second side portion which are opposite to each other; the first side portion faces the motor body, and the second side portion faces the circuit board and shields the mounting surface of the circuit board. With the aforementioned design, it could effectively protect the electronic components on the circuit board and provide good heat dissipation effect.

Description

BACKGROUND OF THE INVENTIONTechnical Field[0001]The present invention relates generally to a brushless motor, and more particularly, to a brushless motor assembly.Description of Related Art[0002]Nowadays, most of the electric-driven machines and the electric tools include a permanent magnet brushless DC motor (BLDCM) as a power motor. The permanent magnet DC brushless motor is adopted because the permanent magnet brushless motor has a higher torque-to-moment-of-inertia ratio and is without the drawbacks of the non-permanent magnet brushless DC motor, such as brush wear, commutation sparking, excessive noise, etc.[0003]However, the conventional structural design of the DC brushless motors is not good enough, which makes it not easy to assemble, disassemble and repair the DC brushless motors. In addition, the electronic components on the circuit boards of the DC brushless motors are usually exposed to the outside and are easily damaged or short-circuited due to collisions with other c...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H02K9/22H02K7/14H02K9/06H02K11/33H05K1/18H05K1/02H05K7/20B25F5/02
CPCH02K9/22H02K7/145H02K9/06H02K11/33H05K1/0203H05K1/181H05K7/209B25F5/02H02K2211/03H05K2201/066H05K2201/10053H05K1/0209H05K2201/1009H05K2201/10166B25F5/008H02K9/227
Inventor HON, WEN-SHING
Owner MOBILETRON ELECTRONICS